Based on the search results, October 1, 2023, is a Sunday and there are several national and international observances, holidays, and events happening on this day. Here are some of them:

• National Hair Day
• International Coffee Day
• International Day of Older Persons
• International Raccoon Appreciation Day
• Sukkot (Jewish Observance)
• National Homemade Cookies Day
• National Black Dog Day
• World Sake Day
• ADHD Awareness Month
• Breast Cancer Awareness Month
• Domestic Violence Awareness Month
• World Vegetarian Day

It is also worth noting that there was a suicide bombing in Ankara, Turkey, on this day, which injured two police officers.